170 CLANGULA HISTRIONICA. 



Male in Winter. — This species, of whicli only a fe^v 

 individuals have been found with us, has the body full, ellip- 

 tical, and depressed ; the neck rather short, and thick ; the 

 head rather larf^c, oblong, compressed, rounded above. The 

 bill is much shorter than the head, tapering, of nearly the 

 same height and bn>adth at the base ; the upper mandible 

 Avith the lateral sinuses wide and rounded, the upper acute, 

 the frontal angles short and rather obtuse, the dorsal line 

 straight and sloping to the middle, then nearly straight, at 

 the end decurved, the ridge broad and flattened at the base, 

 the unguis large, elliptical, convex, the edges soft, with the 

 slender lamellse slightly projecting toward the base ; the 

 lower mandible flattened, with the intercrural space long, 

 moderately narrow, and bare, the unguis large, and ellip- 

 tical. 



The mouth is of moderate width ; the anterior palate 

 deeply concave, with about thirty -five slender lamellse on each 

 side ; the lower mandible with about sixty. The tongue is 

 an inch and a third in length, fleshy, papillate at the base, 

 grooved above, laterally fringed, with a thin rounded tip. 

 The Qjsophagus, seven inches and a quarter long, and two- 

 thirds of an inch in width. The stomach, a strong muscular 

 gizzard of a roundish, compressed form, an inch and a -half in 

 breadth, with large tendons, and dense epithelium. The in- 

 testine is five feet long, rather wide ; the coeca four inches in 

 length, very narrow at the base, enlarging to a quarter of an 

 inch. 



The trachea, at first a quarter of an inch in breadth, pre- 

 sently enlarges to four-twelfths and a-half, and so continues 

 for two inches, after Avhich it contracts to two-twelfths and a- 

 half, and again enlarges to five-twelfths and a quarter, ter- 

 minating in a very large tympanum, seven-twelfths and a- 

 half in length, an inch and two-twelftlis in breadth, projecting 

 on the left side with a rounded protuberance. The bronchi 

 are of moderate length and width. 



The nostrils are medial, elliptical, two-twelfths and a 

 quarter in length. The eyes small, as are the apertures of 

 the ears. The legs are very short, placed far behind ; the 

 tibia bare for four-twelfths of an inch ; the tarsus compressed. 



